 @Test
    public void songServiceTest(){
        String name = "爱";
        R r = songService.songOfSingerName('%' + name + '%');
        List<Song> data = (List<Song>) r.getData();
        for (Song s: data ) {
            System.out.println(s.toString());
        }
        Assert.assertTrue("测试数据正确",r.getSuccess());
    }
